Viktor Christiansson

activity

20202026

_{3}

_{2}

_{7}

under pressure

199 citations · 339 across the 18 of their papers we have counts for

collaborators

18 papers

cond-mat.mtrl-sci2026

Ultrafast dynamics of excitons in black phosphorus

Geoffroy Kremer, Juan F. P. Mosquera, Joël Morf +9

Excitons are key quasiparticles determining the optical properties of solids. As such, they can be utilized to coherently control the electronic structure of materials using optica…

cond-mat.str-el2026

Beyond the conventional Emery model: crucial role of long-range hopping for cuprate superconductivity

Eric Jacob, M. O. Malcolms, Viktor Christiansson +6

The Emery model is the quintessential model for cuprate superconductors. In his eponymous paper, Emery only considered the next-nearest-neighbor oxygen-copper hopping. Later, also…

cond-mat.supr-con2026

Plasmon assisted superconductivity in LiTi $_{2}$ O $_{4}$

Francesco Petocchi, Viktor Christiansson, Ryotaro Arita +1

We combine $G W$ plus extended dynamical mean field theory ( $G W$ +EDMFT) with the density functional theory for superconductors (SCDFT) framework to study the electronic properties o…

cond-mat.supr-con2025

Substrate and cation engineering for optimizing superconductivity in infinite-layer nickelates

Viktor Christiansson, Karsten Held

In a recent experiment [Nature 642, 58 (2025)], a new record for the superconducting critical temperature $T_{c}$ among infinite-layer nickelates has been reported in doped SmNiO $_{2}$ …

cond-mat.str-el2024

Self-consistent $G W$ +Extended Dynamical Mean Field Theory for semiconductors and insulators

Viktor Christiansson, Francesco Petocchi, Philipp Werner

Theoretical studies of semiconductors and band insulators are usually based on variants of the $G W$ method without full self-consistency, like single-shot $G^{0} W^{0}$ or quasiparticle…

cond-mat.str-el2024★ 5 cited

Photo-induced insulator-metal transition in paramagnetic (V $_{1 - x}$ Cr $_{x}$ ) $_{2}$ O $_{3}$

Jiyu Chen, Francesco Petocchi, Viktor Christiansson +1

Pump-probe experiments with femtosecond time resolution allow to disentangle the electronic dynamics from the lattice response and thus provide valuable insights into the non-equil…

cond-mat.str-el2024

Origin of multiple Lifshitz transitions in the Weyl semi-metal RhSi

Krishnendu Patra, Viktor Christiansson, Ferdi Aryasetiawan +1

It is known from density functional theory (DFT) calculations that RhSi has a multifold degenerate Dirac point at the Fermi energy, with the dominant states in the low-energy regio…

cond-mat.str-el2024★ 2 cited

Internal consistency of multi-tier $G W$ +EDMFT

Ruslan Mushkaev, Francesco Petocchi, Viktor Christiansson +1

The multi-tier $G W$ +EDMFT scheme is an ab-initio method for calculating the electronic structure of correlated materials. While the approach is free from ad-hoc parameters, it requ…

cond-mat.str-el2023★ 8 cited

Nature of the photo-induced metallic state in monoclinic VO $_{2}$

Jiyu Chen, Francesco Petocchi, Viktor Christiansson +1

The metal-insulator transition of VO $_{2}$ , which in equilibrium is associated with a structural phase transition, has been intensively studied for decades. In particular, it is chal…

cond-mat.supr-con2023★ 4 cited

Quaternary borocarbides: a testbed for DFT for superconductors

Viktor Christiansson, Philipp Werner

Using ab-initio density functional theory for superconductors (SCDFT), we systematically study the quaternary borocarbides $R M_{2}$ B $_{2}$ C. Treating the retarded (frequency-dependent)…

cond-mat.mtrl-sci2023★ 17 cited

Berry Curvature Signatures in Chiroptical Excitonic Transitions

Samuel Beaulieu, Shuo Dong, Viktor Christiansson +10

The topology of the electronic band structure of solids can be described by its Berry curvature distribution across the Brillouin zone. We theoretically introduce and experimentall…

cond-mat.str-el2023★ 12 cited

Correlated electronic structure of Pb $_{10 - x}$ Cu $_{x}$ (PO4) $_{6}$ O

Changming Yue, Viktor Christiansson, Philipp Werner

Recently, above-room temperature superconductivity was reported in the Cu doped lead apatite Pb $_{10 - x}$ Cu $_{x}$ (PO4) $_{6}$ O, dubbed LK-99. By relaxing the structure with Cu substituti…

cond-mat.str-el2023★ 199 cited

Correlated electronic structure of La $_{3}$ Ni $_{2}$ O $_{7}$ under pressure

Viktor Christiansson, Francesco Petocchi, Philipp Werner

Recently, superconductivity with a $T_{c}$ up to 78 K has been reported in bulk samples of the bilayer nickelate La $_{3}$ Ni $_{2}$ O $_{7}$ at pressures above 14 GPa. Important theoretical ta…

cond-mat.str-el2022★ 8 cited

$G W$ +EDMFT investigation of Pr $_{1 - x}$ Sr $_{x}$ NiO $_{2}$ under pressure

Viktor Christiansson, Francesco Petocchi, Philipp Werner

Motivated by the recent experimental observation of a large pressure effect on $T_{c}$ in Pr $_{1 - x}$ Sr $_{x}$ NiO $_{2}$ , we study the electronic properties of this compound as a function o…

cond-mat.str-el2022★ 2 cited

Self-screening corrections beyond the random-phase approximation: Applications to band gaps of semiconductors

Viktor Christiansson, Ferdi Aryasetiawan

The self-screening error in the random-phase approximation (RPA) and the $G W$ approximation (GWA) is a well-known issue and has received attention in recent years with several meth…

cond-mat.supr-con2022

Superconductivity in black phosphorus and the role of dynamical screening

Viktor Christiansson, Francesco Petocchi, Philipp Werner

Simple cubic phosphorus exhibits superconductivity with a maximum $T_{c}$ of up to 12 K under pressure. The pressure dependence of $T_{c}$ cannot be consistently explained with a simpl…

cond-mat.str-el2021★ 10 cited

Fully {\it ab-initio} electronic structure of Ca $_{2}$ RuO $_{4}$

Francesco Petocchi, Viktor Christiansson, Philipp Werner

The reliable {\it ab-initio} description of strongly correlated materials is a long-sought capability in condensed matter physics. The $G W$ +EDMFT method is a promising scheme, whic…

cond-mat.str-el2020★ 72 cited

Normal state of Nd $_{1 - x}$ Sr $_{x}$ NiO $_{2}$ from self-consistent $G W$ +EDMFT

Francesco Petocchi, Viktor Christiansson, Fredrik Nilsson +2

The recent discovery of superconductivity in hole-doped NdNiO $_{2}$ thin films has captivated the condensed matter physics community. Such compounds with a formal Ni $^{+}$ valence have…

Ultrafast dynamics of excitons in black phosphorus

Beyond the conventional Emery model: crucial role of long-range hopping for cuprate superconductivity

Plasmon assisted superconductivity in LiTi2​O4​

Substrate and cation engineering for optimizing superconductivity in infinite-layer nickelates

Self-consistent GW+Extended Dynamical Mean Field Theory for semiconductors and insulators

Photo-induced insulator-metal transition in paramagnetic (V1−x​Crx​)2​O3​

Origin of multiple Lifshitz transitions in the Weyl semi-metal RhSi

Internal consistency of multi-tier GW+EDMFT

Nature of the photo-induced metallic state in monoclinic VO2​

Quaternary borocarbides: a testbed for DFT for superconductors

Berry Curvature Signatures in Chiroptical Excitonic Transitions

Correlated electronic structure of Pb10−x​Cux​(PO4)6​O

Correlated electronic structure of La3​Ni2​O7​ under pressure

GW+EDMFT investigation of Pr1−x​Srx​NiO2​ under pressure

Self-screening corrections beyond the random-phase approximation: Applications to band gaps of semiconductors

Superconductivity in black phosphorus and the role of dynamical screening

Fully {\it ab-initio} electronic structure of Ca2​RuO4​

Normal state of Nd1−x​Srx​NiO2​ from self-consistent GW+EDMFT

Plasmon assisted superconductivity in LiTi $_{2}$ O $_{4}$

Self-consistent $G W$ +Extended Dynamical Mean Field Theory for semiconductors and insulators

Photo-induced insulator-metal transition in paramagnetic (V $_{1 - x}$ Cr $_{x}$ ) $_{2}$ O $_{3}$

Internal consistency of multi-tier $G W$ +EDMFT

Nature of the photo-induced metallic state in monoclinic VO $_{2}$

Correlated electronic structure of Pb $_{10 - x}$ Cu $_{x}$ (PO4) $_{6}$ O

Correlated electronic structure of La $_{3}$ Ni $_{2}$ O $_{7}$ under pressure

$G W$ +EDMFT investigation of Pr $_{1 - x}$ Sr $_{x}$ NiO $_{2}$ under pressure

Fully {\it ab-initio} electronic structure of Ca $_{2}$ RuO $_{4}$

Normal state of Nd $_{1 - x}$ Sr $_{x}$ NiO $_{2}$ from self-consistent $G W$ +EDMFT